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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 218 · 40 sums
TalentJR

The trick (Dwandwa Yoga): For abc: columns D(a) | D(ab) | D(abc) | D(bc) | D(c). D(a) = a², D(ab) = 2ab, D(abc) = 2ac + b², D(abcd) = 2ad + 2bc. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.8064² =
  2. 2.444² =
  3. 3.9282² =
  4. 4.3089² =
  5. 5.1334² =
  6. 6.8305² =
  7. 7.449² =
  8. 8.835² =
  9. 9.8745² =
  10. 10.9412² =
  11. 11.313² =
  12. 12.619² =
  13. 13.618² =
  14. 14.430² =
  15. 15.227² =
  16. 16.273² =
  17. 17.755² =
  18. 18.654² =
  19. 19.7141² =
  20. 20.402² =
  21. 21.138² =
  22. 22.4915² =
  23. 23.159² =
  24. 24.619² =
  25. 25.971² =
  26. 26.394² =
  27. 27.916² =
  28. 28.268² =
  29. 29.129² =
  30. 30.2197² =
  31. 31.4978² =
  32. 32.137² =
  33. 33.185² =
  34. 34.517² =
  35. 35.308² =
  36. 36.384² =
  37. 37.953² =
  38. 38.658² =
  39. 39.323² =
  40. 40.590² =

Answer key

  1. 65028096
  2. 197136
  3. 86155524
  4. 9541921
  5. 1779556
  6. 68973025
  7. 201601
  8. 697225
  9. 76475025
  10. 88585744
  11. 97969
  12. 383161
  13. 381924
  14. 184900
  15. 51529
  16. 74529
  17. 570025
  18. 427716
  19. 50993881
  20. 161604
  21. 19044
  22. 24157225
  23. 25281
  24. 383161
  25. 942841
  26. 155236
  27. 839056
  28. 71824
  29. 16641
  30. 4826809
  31. 24780484
  32. 18769
  33. 34225
  34. 267289
  35. 94864
  36. 147456
  37. 908209
  38. 432964
  39. 104329
  40. 348100

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